二维六角形轻水堆燃料组件中子通量分布的计算

介绍利用穿透概率法求解二维六解形几何多群中子积分输运方程。子区内中子源及通量采用线性分布，子区表面通量在方向上采用简化６Ｐ１近似。根据提出的模型，编制了ＴＰＨＥＸ－Ｂ程序，并对一些轻水堆六解形组件问题做了计算，计算结果与ＭＣ结果进行了比较，符合良好。本程序可用于六解形轻水堆燃料组件计算。

Calculation of the Flux Distribution in Two Dimensional Hexagonal LWR Fuel Assembly

This paper describes the model of calculating the flux distribution in two dimensional hexagonal geometry LWR fuel assembly by transmission probability method.The source within the meshes is assumed to be isotropic and linearly dependent on x and y coordinates.At the mesh surfaces the const space distribution and the simplicity 6P1 approximation for the anisotopic angular distribution are considered.Based on proposal model,the code TPHEX- B is encoded and some hexagonal light water reactor assembly problems have been tested.The calculated results are compared with those of MC method.They are all in good agreement.The code TPHEX- B can be used to the hexagonal geometry assembly calculation of LWR.